Metal-reducing machine.



.B. M. w. HANSON.

v METAL REDUCING MACHINE. APPLICATION-FILED OCT. 25, 1915- 9 SHEETS SHEET I.

v Patented Mar; 13, 1917.

B. M. W- HANSON.

METAL -REDUCVING MACHINE. APPLICATION men' ocT.25.1915.-

- Patented Mar. 13, 1917.

9 SHEETS-SHEET 2 I veyaiior B. M. W. HANSO N. METAL REDUCING MACHINE.

APPLI CAT|0N FILED 0CT.25.1915.

1,219,305,. I Patented Ma1*. 13,1917

9 SHEETS-SHEET s.

mvenor B. M. W. HANSON.

METAL REDUCING MACHINE.

APPLICATION FILED (M11125. i931.

SET J Patented Mar. .13, 191?.

9 SHEETS-SH Mmununn 8. M. W. HANSON.

METAL REDUCING MACHINE.

APPLICATION FILED OCT. 25, I9I5.

' Patented Mar. 13,1917.

9 SHEETSSHEET I.

Zia wen? 8.. M. W.' HANSON.

METAL REDUCING MACH|NE.

APPLICATION FILED OCT. 25.1915.

B. MfWI HANSUN.

METAL REDUCING MACHINE.

APPLICATION FILED 061125.1912.

Patented Mar. 13, 191T.

r I [mwewar BENGT M. W. HANSON. 0F HARTFORD, CONNECTICUT, ASSIGNOR T0 PRATT & WHITNEY COMPANY, OF HARTFORD, CONNECTICUT, A GORPQRATION OF NEW JERSEY.

METAL-REDUCING Maritime.

Application filed October 25, 1915.v

To all whom 2'3 may concern:

Be itknown that I, Bnxc'r M. \V. HAN- son, a citizen of the United States, residing at Hartford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Metallieducing Machii'ies, of which the following is a specification.

This invention relates to metal-reducing machines. A metal-rediuring machine involving my inventioincan be employed for different purposes. In the drawings accompanying and forming part of the present specification I have represented in detail.-

one of the several convenient forms of embodiment of the invention, which I will set forth fully in the following description. I do not restrict myself to this particular disclosure; I may depart therefrom in several respects within the scope of the invention defined by the claims following said description.

In said form of embodiment of the invention the machine is shown. organized for grinding. although it may not be necessary in all cases that the tool by which reducing is accomplished, should be a grinding wheel or analogous device. ()ne of the fundamental objects of the invention is the provision of means of an efiective character by which the machine is adapted to reduce with accuracy and precision work of different natures. As two of many illustrations Imight mention a plain pulley and a stepped pulley, the former typifying what might be considered plain or regular work and the latter irregular work. In the present instance the machine is convertible, means being provided whereby it may at will, be conditioned for properly performing either of its desired functions. There are other features of novelty and advantage, which with the foregoing will be fully stated in my description.

Referring to said drawings:

Figure'l is a front elevation of the upper portion of a metal-reducing machine involving my invention, the right side of the machine being broken away.

Fig. 2 is an elevation as. seen from the left in Fi 1, the rear portion of the machine being broken away.

Fig. 3 is a transverse section on the line 3-3 of Fig. 1, looking in the direction of the arrow.

F ig. 4 is a sectional view as seen from the Specification of Letters Patent.

Patented Mar. 13, 1917.

Serial No. 57,641.

front showing a part of the carriage recipro eating and reversing mechanism and certain gears hereinafter more particularly described.

Fig. 5 is a practically similar view, the carriage reciprocating and reversing gear iug of Fig. 4 being shown on the right in Fig. 5 which at the left illustrates some of the change gears.

Fig. (l is a front elevation partly in section and with portions broken away, of the carriage reciprocating and reversing mechanism. the dogs by which the carriage is reversed, the means by which the cross feed is regulated, and certain other elements of the feeding and controlling mechanism.

Figs. 7 and 8 are cross sections on the lines T-7 and 88 respectively of Fig. 6, looking in the direction of the arrow.

Fig. 9 is a transverse section showing cross feeding means and certain coope at-ive elements.

Figs. 10 and 11 are transyerse sections on the lines 101()and 1111 respectively of Fig. 1, looking in the direction of the arrows.

Fig. 12 is a cross section on the line 12--12 of Fig. 5, looking in the direction of the arrow. I

Fig. 13 is a longitudinal section of the live spindle and part of the driving mechanism therefor.

Like characters refer to like parts throughout the several views, which are on dilferent scales.

, As may be inferred from what has been noted, the invention can with advantagtnbe incorporated in machines of various kinds, although the same is of especial utility when embodied in a grinding-machine. I have already alluded to the fact that by the machine two different kinds of work which in some respects materially ditfer in form, can be reduced on the same machine, so that-the latter is of compound type. There is a tool which may, as will be obvious, and preferably does, take the form of a grinding-member such as an emery wheel, and means for supporting the work, in conjunction with means by which the work and the tool can atwill be moved relatively toward and from each other or whereby the work and tool can be relatively reciprocated to cause the tool to- I traverse the work, and-in the latter event to also cause a relative step hy step approach to the work and the toolat predetermined points preferably at the conclusionof each half of the reciprocation. When a stepped pulley is being reduced, means will be different kinds of work in con unction with which the machine operates in an eminently satisfactory manner. Preferably, although not essentially, the tool occupies a fixed relation. It is also preferably rotative. In

such case, therefore, it"also follows that the best effects, are secured through the move-- ment of the work for instance, by the proper action of work-supporting means.

The framework for supporting the different parts of the machine may be of any suitable nature. That shown comprises the base or bed 2. The tool shown consists of a grinding-wheel 3 of emery or other suitable substance (see Figs. 1 and 3 for example.) This grinding-wheel as represented is fastened as by keying, to a shaft as 4 (see also Fig. 2), said shaft being supported for rotation by a hearing as 5 bolted or otherwise suitably fastened to the upper side of the base or bed 2. As illustrated the bearing is equipped with a guard (3 partly surrounding the wheel 3 to preveutspattering or scattering of the particles and other foreign matter produced at the grinding zone. The shaft 4 and therefore, the grinding wheel 3 may be rotated in any. desirable manner, for in-.

stance by the pulley 7 (Fig. 2) adapted to be belted to an electric motor not shown, and

keyed or otherwise fastened to said shaft 4. In the present instance and as will herein: after appear the moving parts are operated through the initial intervention of the shaft 4 which presents the main or primary shaft of the machine.

' The work carrying means in the present case is of compound nature comprising in its organization a main carrier as 8 and an auxiliary carrier as 9, the latter in the construetion shown being mounted on the fori'ner. As represented the bed 2 has suitable ways between its ends for supporting the main carrier or carriage 8 for sliding movement crosswise of the bed. .The main carrier or carriage 8 as illustrated, is provided in turn with ways for sup' 'iorting the, auxiliary can. rier or table for sliding movement lOYlQQILKP' ,dinaliy of the bed 2 as shown for instances in Figs. 1, 2, 3,7, 8 and 9. Mounted on andsuitably rigidly connected with the auxiliary nected the head and tail stocks 11 and 12 provided with the live and dead spindles 13 and 14 respectively, (Fig. 1). These'head and tail stocks and their spindles 13 and 1 1 are provided with the usual adjuncts for efcarrier 9 is the member 10 to which are confecting adjustments of the same, Which'being old and constituting no-part of the invention, require no detailed description.

The two spindles 13 and 14 present a convenient means for supporting the work, and when the spindle 13 is rotated the work will also be rotated. I might note at this time that in grinding I prefer to rotate both the work and. the grinding tool 3. The means shown by which the spindle 13 is rotated will be hereinafter more particularly described.

Fastened suitably to the shaft or arbor 4 (Fig. 2) is-a stepped pulley 15 connected by a belt 16 with thestep'pd pulley 17 connected in" turn by gearing inclosed in the box 18 with the shaft 19 of the pulley 20, this boxing 18 and the shafts for the pulleys 17 and 20 being supported suitably bythe rear side of the bed 2. The nected by the belt2l with the stepped pulley 22 fastened to the shaft 23 supported by bean lugs 24 rising from and suitably fastened to the base or bed 2. Between the uprights or standards 24 and fastened to the shaft 23 is the drum 25 (Fig. 1) around which. the belt 26 is passed, said belt being also passed. around the pulley or band wheel 27 (Figs. 1

pulley 20 is conand 2) loose on the shaft 28, thebelt 26 be-- passing around suitablypositioned idlers yieldingly mounted.

tween the drum 25 and the band Wheel 27" as 29, some of which as illustrated. may be';

This shaft 28 is sup ported by bearings on the longitudinally movable or auxiliary carrier 9. The shaft I 28 is connected by gearing in the box 30 with the live spindle 13. The clutch 31 (Fig. 1)

i may be utilized to clutch thed'iand wheel or pulley to the shaft 28, said clutch 31 being operative by the hand lever 32. When the pulley or band wheel 27 is clutched to the shaft or arhor28, it will be clear that the spindle 13 through the intervention of the described parts will be rotated, this regardless of the longitudinal movement of the auxiliary carrier or table 9, the belt 26 sliding along the drum 25 on the longitudinal movement of said carrier or table 9.

tion corresponding to their axes of rotation,'

In the present case this particular result is obtained solely by the motion of the main slldc or carriage 8. in grinding a plain pulley or similar article. there is a compound motion, there being initially a relative movement of the tool and the work toward each other and also a relative lateral movenuent.

In grinding a plain pulley or equivalent piece of work the work is fed toward the tool and at the conclusion of a predetermined amount of advancing movement of the work. the work is moved laterally or in a direction conforming to the axisof rotation of the tool and of the work, botlrof which as alrezuly noted preferably rotates. In the organization shown in grinding a plain pulley or analogous device, the movement of 1 the work toward the tool is accomplished by the movement of the slide 8. while the lateral movement of the work is secured through the motion ofthe slide 0.

The belt 26 passes around the yieldin{ "ly-v 29 mounted idler 3'3. and also arouml the pulley 34 (Figs. 2 and 5), said pulleylfrl being fastened to the shaft 35;extendii'1g into the gear box 36 suitably mounted on and rigidly connected with the main or iross slide S. lhis shaft projects into said box and presents a suitable support for the arm 37 ivlitiih sustains the idler 33. It will, therefore be clear that if the (hunrbe in motion the shaft 35 through thedescribed connections will be rotated. Fastened to the inner end of the shaft is the'pinion 38 (Fig 12) in mesh with the idler pinion 32) which in turn-meshes with the spur gear i0. these scvera] gears-and others to be hereinafter de- 35 scribed being situated in the gear box 36. The gear 40 is pinned or otherwise suitably connected with the shaft 41, being rigid with i the pinion 42 (Fig. 5) in: mesh with the gear {13 loose on the shaft 44. Complemental to 40 the gear 4-3 is the gear 45, the clutch member -46 rotative with the shaft being slidable longitudimilly of said shaft 44 to alternately couple the gears 43 and 45 theretorthe hand lever 47 on the front of the boxing 36 being provided for the operation of said clutch. member 46. The shaft 44 rigidly carries the spur gear 48 in mesh with the spur gear 49 loose on the shaft 50, coaxial with the shaft 41 (Fig. 5). Complemental to the 0 gear :9 and also loose on the shaft 50 is the spur gear 51 meshii'ig with the pinion which like the gear 48 is fastened as by pinning, to the shaft 44. Between the loose gcars' lil and 50 is the clutch member 53 operative by the hand lever 5% on the front of the box 36 and by which the, gears 49 and 531 can be alternately clutched to the shaft 50. Loose on the shaft 50 is the gear 55 in mesh with the spur gear 56 fastenedto the shaft 57. Coaxial with the shaft 50 is the shaft 58 to which is pinned or otherwise suitably connected the clutch section 59. Between the gear 55 presi-znting a clutch section, and the clutch section 5!.) is the clutch member 5 6O operative by the hand lever (31 on the front of the box 250. and this hand lever ill can be utilized to clutch the gear 55 to the shaft Ill) or the clutch section 5!) to said shaft 50. it will he understood that the clutch member 30 rotates with the shaft 5H, and it will be assumed that said shaft .30 is in rotation. To operate the shaft 53 the clutch member 0 will be engaged with the clutch section 59, and it will be clear that when the shaft is turned, the shaft 57 will be at rest: To reverse this relation the clutch member (50 will be engaged with the gear or agclutch section 55. In the latter event the gear and tl'ierefore the gear 56 will be ro tatcd to ellect the rotation of the shaft 5T. As will hereinafter appear there are two mechanisms by which the simple or compound motiorrto which I have alluded can be effected. ()ne of these mechanisms receives its effect from the shaft 58 and the other from the shaft 57. and the clutch member 60 presents a convenient means for throwing said mechanism alternately into action at will. When ne mechanism is'in action, there will be nrrcly a movement of the work toward the tool, whereas when the other is in action. there will be a movement of the work toward the tool and a lateral movement. I have described means of a simple nature by which variations in speed of the shafts 57 and can be conveniently accomplished.

Mounted in the box 36 is the bevel gear 62 keyed or otherwisesuitably fastened to the short or stub shaft (33 rotative in the inner wall of said box. There is rigid with 'the inner end of the stub shaft (33 the pinion (34 (Fig. 8) in mesh with the spur gear 35 pinned or otherwise suitably connected to the shaft 36 supported by and extending transversely of the carriage or main slide 8. Rigid with the inner end of the shaft 6 is the pinion, 37 in mesh with the ra k (39 fastened to the table or auxiliary slide 9. The bevel gear 32 is oppositely rotative; when ii. is rotated in one direction it causes a movement. through the intermediate described parts. of the table 9 in one direction, whereas when said bevel gear 2 is oppo sitely rotated reverse movement of said table tl'irough said described parts will follow.

The shaft 58 (Fig. t) loosely carries; the hevel pinions (ii and, in mesh with the bevel gear (22. Between these bevel pinions is the clut h member '71 slidable on and rotal'ive with the shaft said clutch member Tl being adapted to alternately clutch the bevel' pinions (i9 and TO to the shaft 58 to effect. as will be apparent opposite movements of the table 9 longitudinally of the bed (oiiperative with the clutch member 71 is the shifter 72 mounted for rocking moven'ient-ainl operated by the actuator 73 as familiar in this art. The actuator 73 supported for rockingmovement and has at I being adapted to alternately rock the actuof which will he i will be caused to engaeethe the spur gear 86 segment 74, the function hereinaftereX-plmned. The

its upper end the upper tree path of the dogs and 76 connected with the table 9 for longitudinal adjustment as also familiar'in this art, the dogs 75 and 7t? ator 73. In Fig. 6 the clutch member 71 is in engagement with the bevel pinion 69 to effect through the parts already described J movement of the table or auxiliary slide 9 lVhen the tablelongitudinally of the bed 2. has practically completed such movement, the dog 75 will strike the upper end of the actuator 73 and will swing over said actuator 73, so that the latter in turn will operate the shifter 72 her ll through the pinion (ill and cause said clutch member to engage thebevel pinion 70, I practically when the movement stated. of the-table 9 has thismotion being, completed been completed, so that whenthe clutch member 71 engages the pinion 70, the motion of the table E) will be reversed." "ll hen the reverse movement of the table 9 has been rn-actically comph-ited the clutch member 71 again reverse the n'u'ivei'nentt in mesh with the segment 74 is the pinion T7'to the shaft of which the crank arm '78 is connected, the link 7 heing'pivoted to said crank arm and in turn loosely coi'mect ed with the rocker H0 (l igs. (i and fl for example), The stroke of this rocker is governed as by the screwlll the length of movement of the rocker" wheel This ratchet wheel and rocker, the cooperating pawl and their adjuncts are familiar in this art and therefore, require but a brief The ratchet wheel 82 is moi'inte'd on the hollow shaft 84. Fastened to the inner end of the shaft 84 is the pinion 85'ii1-mesh with with which the pinionlrll' (Figtll) .is rotative. The pinion 8? meshes in turn' with the spur gear 88 fastened to the shaft 89, said shaft having a threaded connection with the hilt SOiasten'ed as ill to the bed. The main slide vided with suitable bearing means for supporting this shaft 89 which is immovable in the direction of its axis of rotation with respect to the main slide 8. It,- therefore, follows that if the shaft 89' be rotated; it will be moved longitudinally hy the stati0n- 8 proary nut 90, the direction of longitudinal,

When the travel of thetahle or slide 9 in either direction has been practically c0mend of the actuator 73 is in the of thc rocker ratchet wheel.

ment of the main slide thereon toward the tool to disengage the clutch menipinion Gilt-o the hand wheel 96 is clutched to the shaft bed 2.

each other governing the amount of. movement or": the ratchet j certain of description 1 by a screw ports the shaft 98 shaft 98 (Fig. 11)

pleted, the oscilatol'v actuator 73 will be swungovor through the primary agency o one. of the dogs '75 and 7G to effect through parts acomplete oscillation the intermediate 80. On the advance ofthe rocker 80 the pawl'83 will feed the ratchet wheel 82, but on the return of the rocker the pawl will fl/hen-the ratchet wheel 8:? is fed by the 'pawl, it acts through the -intermediate described parts to eilect the move- 8 with the work 3, this action continuing untilthe point or tooth of the pawl l rides up on. the adjustable guard 92 as familiar in this art. When the pawl does rest on the guard, further inward movement of the main slide 8 nal movement of the auxiliary slide 9 should the same be in action at this time accom plishing nothing, the cut having already been made. The bevel gear 62 is shown as being in mesh with the pinion 94 (Figs 5 and 10.) pinned or otherwise secured to the shaft 95 equipped. at its front with a hand wheel 96 adapted to be connected at will to the shaft 9'" by the'clutch member 97. -When 5);) and whenthe shaft 58 is at rest, the slide through the interu'ualiate described parts can be adjusted longitudinally of the .l have described one convenii-int n'iechanism by which the work and the tool. can be moved relatively toward and from and can he moved relatively latera'lly: and the tool toward and from each otherin the present instance is in a direction transverse or at right angles to the axis of rotation of the work and the tool, whereas the relative.lateral movement of the work and the tool as I have termed it, is in a direction corresponding with these axesralthough as will be interned this may not in all cases lie-necessary the priricip'al motive in view being to obtain when required relative movement of the work and the idol in directions transverse to each other.

I will now describe convenient mechanism whereby merely the relative movement of the work and the. tool toward and from each. other can be obtained. The boxin 36 sup- (Fig. 11). Loose o the is {the bevel gear 100 in mesh with the bevel gear 101 (Fig. 6) which with the spur shaft 103. The spur gear 102 in turn meshes with the pinion 104 on tened to said shaft 105 is the 'spur gear IOG'THQSlIlHg with the pinion 107 on the inner end of the shaft '57 which latter, it will be ren'iembered, is caused to rotate when the clutch memberHGO clutches the pinion to the shaft 50. It, therefore, follows that when the shaft 57 is being rotated, the

is stopped, longitudi The relative movement of the wor {i gear- 102 is fastened to'the.

the shaft 105. Fas

ride idly over the teeth of the bevel gear 100 nipulated so as through the intermediate parts is turned. This bevel gear 100 rotates between the friction clutch disks 108 and 10 (Fig. 11). both rotative with the shaft 5, and it will be clear therefore, that if no resistance be interposed to the movement of the shaft )8 suilicient to ()VQI'COIHE that offered by the cooperative disks 108 and 109, the bevel gear will rotate said shaft 98. llotative with the gear 100 is the pinion 117 in mesh with the spur gear 88 (Fig. 4-) which turns with the screw shaft 89. Rotative with the elongated hub of the disk 109 is thedisk 110 carrying on its periphery an adjustable stop cooperative with the fixed stop 112 (Fig. (3). The stop 111 will be adjusted on the disk 110, the desired extent, and the shaft will be caused to rotate through the rotation of the gear 100 to obtain through the intervening parts the motion of the main slide 8 crosswise of the bed this motion continuing until the stop 111 strikes the fixed stop 112 which arrests further motion of the disk 110 and thereby of the shaft 98 and main slide 8, although the bevel gear 100 may continue to rotate, the latter. however, running idly or without accomplishing anything between the cooperative portion of the friction disks 108 and 109.

Theboxing is shown provided with a shaft 113 equipped at its front with the hand Wheel 11% and within the boxing with a pinion 115. the spur gear 116 in mesh with the pinion 117 connected rotatively with the clutch disk 108. When the clutch member (30 is in its neutral position as shown for instance in Fig. 5, or in engagement with the clutch member 5:3,the hand wheel 11 can be mato effect throughthe described parts the manual adjustment of the main slide S. This hand wheel 11-1 is also utilized in the firesent case to return said main. slide 8 to its primary position after the conclusion of a grinding operation.

What I claim is? 1. The combination of means for" supporting and rotating the work about a. fixed axis, means for supporting a tool, mechanism for automatically causing a relative reciprocation of the work and the tool and a relative motion of the'wor: and the tool toward each other, mechanism for causing a. relative motion of the Work and the tool toward each other, and means controllable at Will, for alternately putting said mechanism into action.

2. The combination of means for supporting; and rotating the work about a. fixed axis, means For supporting; a tool. and means governed at will. for :giatmnatically causing a relative real the work and the tool. and a "it movement of same tow each oaier the conclusion of The pinion 115 meshes with 'with the axis of rotation of the work. and

means governed at will for automatically causing the reciprocation of the work and a movement of thework toward the tool at the conclusion of each stroke of the reciprocation, or for automatically causing solely a movement of the work toward the tool.

4-.The combination of a main slide, an auxiliary slide supported by the main slide, and mechanism governed at will for automatically reciprocating the auxiliary slide and for moving the main slide transversely of the line of lGClDl'OCaillOD of the auxiliary slide at the conclusion of each stroke of the reciprocation, or a motion of the main slide in a constant direction transversely of the auxiliary sli e.

A machine of the class described having a bed, a main slide and an auxiliary slide, the auxiliarv slide being supported by the main slide for movement longitudinally of the bed, and the main slide being supported by and movable transversely of the bed, and mechanism governed at will, for automatically reciprocating the auxiliary slide and tor moving" the main slide at the conclusion of each stroke of the reciprocation or'solely the motion of the main slide.

6. A machine of the class described hav ing a bed. a grinding wheel rotatively supported by said bed, a main slide and an auxiliary slide. the main slide supporting the auxiliary slide for movement in a direction parallel to the axis of rotation of the grinding wheel and the main slide being supported by the bed for movement transversely of said axis. mechanism governed atwill, for ahtomatically reciprocating the auxiliary slide in the direction of said axis and for moving the main slide transversely, of said axis approximately at the conclusion of each stroke of the reciprocation, or a motion of the. main slide transversely of said axis, and means for supporting the work on the :uxiliary slide, for rotation about an axis parallel to said other axis.

7. A machine of the class described havin: a. bed, a grinding wheel rotatively supported by said bed. a main slide and an auxiliary slide, the main slide supporting the auxiliary slide for movement in a dir .ction parallel to the axis ot' rotation of the grinding" wheel and the main slide being: supported by the bed for movement trans versely of aid axis, and means on the auxiliary for supportingthe work for slide,

rotation about an axis parallel to the axis of rotation of the grinding wheel.

8. The combination of a rotary grinding Wheel, a slide movable toward and from the grinding WheeLin a direction transverse to the axis of rotation thereof, means con nected and movable with said slide, for sup,- porting the Work for rotation about an axis parallel to thatof the grinding wheel, means involving a frictionally driven element for imparting a constant movement of the slide toward the grinding fWhBBl, and adjustable means for arresting the motion of said frictionallv driven element at a predetermined point.

9. The combination of means for supporting a grinding wheel for rotation, means for supporting Work about an axis parallel to the axis of rotation of the grinding wheel, a slide carrying one of the supporting means and movable in a direction transverse to said axis,'mechanism involving frictional means for imparting movement of said slide, and adjustable means for arresting the action of one of the elements of said friction means.

10. The combination of a slide, a station ary nut, a feed screw extending through the nut, connected and movable With the a power transmitting member, means for turning said power transmitting member, friction means for transferring the effect of the power transmitting member to the feed screw, and means for arrestlng the moti on of the power transmitting member at a predetermined point. a

11. The combination of a slide, a feed screen connected and movable with the slide, a stationary nut through which said feed screw extends, a shaft geared to the feed screw, a gear loose on said shaft, friction means for transferring the efiect of the gear to the shaft, and means for rotating said gear.

12. The combination of a main slide, an auxiliary slide on the main slide,

feeding mechanism for the main slide, and means governed at will for reciprocating the aux- I senor M. W. HANsoN. lVitnes-ses W. M. Sroims, HEATH Snrnnnmnn. 

